Shuttle-driving mechanism for ribbon-looms.



A. JENNY.

SHUTTLE nmvms MECHANISM FOR RIBBON LOOMS.

APPLICATION FILED MAR. 19. 19W

Patented Nov. 20 1.917.

2 SHEETS-SHEET I 5] wuawtoz A. JENNY.

SHUTTLE nmvmc MECHANISM FOR masom LOOMS.

APPLICATION HLED MAR-19. 19H.

Patented Nov. 20, 1917.

2 SHEETSSHEET 2.

avwawfoz QN s w w w k hearing 13 of beam 1. mounted a smaller pinion 14 that is engaged PATERSON, NESN JERSEY.

.snnTrLE-nmvine MECHANISM son meson-Looms.

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Application filed March 19, 1917.

To aZZ whom it may concern:

Be it known that I, Aoonri-i JENNY, a citizen of Switzerland, and a resident of Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Shuttle-Driving Mechanism for Ribbon-Looms, of which the following is a specification.

This invention relates to a novel mechanism for imparting intermittent reciprocal movement to the shuttle-driving racks of a ribbon loom. The invention consists in the various features of novelty more fully pointed out in the specification and appended claims.

In the accompanying drawing:

Figure 1 is a side elevation of part of a ribbon loom provided with my improved shuttle driving mechanism;

Fig. 2, a cross section on line 2--2 Fig. 3;

Fig. 3, a front view;

Fig. 4:, a cross section on line 4-1 Fig. 3, and

Fig. 5, a longitudinal section on line 5-5 Fig. 3.

The lay beam 1 of the ribbon loom, carries rows of shuttles 2 movable in spaced shuttle blocks 3, and operated by pinions lfrom reciprocating racks 5, which are slidable within the lay beam, said beam being oscillated from shaft 6 by cranked pitman 7, all as usual. Racks 5 are at one of their ends, extended forwardly as at 8, and are here connected to each other by a frame 9, which is longitudinally adjustable and is adapted to transmit the movement imparted to one of the racks (say the lower rack) to the other rack.

Back of extension 8, the driven rack is furnished with teeth that form a supplemental rack 10, which is engaged by a pinion 11, the shaft 12 of which turns in a 7 On this shaft is by a toothed sector or oscillative member 15, which is at 16 mounted on one end of a forked bar 17. In order to fixedly attach sector 15, to bar 17, the former is furnished with an arm 18, that is attached to the bar at 19. The forked end 20 of bar 17, is provided with opposed cheeks 21 having slots 22 that are engaged by screws 23, by means of which the distance between the cheeks is rendered adjustable. Fork 2O straddles a- Specification of LettersPatent.

Patented Nov. 29% 191W.

Serial No. 155,650.

tubular friction roller 2 mounted on one end of a lever 25 which is pivoted at 26 to a fixed support 27, and receives oscillative movement from a shaft 28 by eccentric 29 and rod 30. Lever 25 extends rearwardly at an angle to lay 1, and is in all positions of the latter in operative engagement with bar 17, through the adjustable connection described.

The timing of the eccentric 29 which opcrates lever 25, and through that, the shuttles, is at the ratio of 1: 2 to the movement of the lay through pitman 7.

In operation, rod 30 will oscillate lever 25, which in turn by roller 2-1, and bar 17 will rock sector 15 so as to impart by pinion 14, shaft 12 and pinion 11, the desired reciprocal movement to racks 5. The diameter of roller 24 should be less than the clearance between cheeks 21, so that there is obtained a slight dead movement, between lever 25 and bar 17 and a corresponding intermittent movement for the racks and shuttles, during which the weft threads are permitted to cross between the shuttle blocks. By setting the cheeks 21 more or less apart, the duration of this dead movement may be accurately adjusted.

It will be seen that by my invention, a positive movement is imparted to the shuttles, which prevents slipping and thus insures a. perfect output, while furthermore, the duration of time during which the shuttles are allowed to dwell may be readily adjusted. So also while the shuttles are positively driven by means of a desirable gear drive, such drive in no wise impedes the oscillating movement necessary for the lay beam.

I claim:

1. In a ribbon loom, a series of shuttles, arranged in rows, a pair of connected racks operatively engaging the same, a first pinion engaging one of said racks, a second pinion connected to the first pinion, an oscillative sector engaging the second pinion, a forked bar carrying the sector, a lever engaging the forked bar, and means for oscillating the lever.

2. In a ribbon loom, a series of shuttles, a rack operatively engaging the same, a pinion engaging the rack, an oscillative member operatively engaging the pinion, terlred bar carrying; the, oseillative mem 5 imparted by said lever to said bar.

pinion engaging the rack, an oscillative member operatively engaging the pinion, a bar carrying said member, said bar having a fork, a pair of relatively adj ustablecheeks on said fork, and an oscillative lever adapted to engage said cheeks.

' ADOLPH JENNY.

her, and an oscillative lever engaging the forked bar, said lever having a play Within the fork of said bar, whereby intermittent. movement With lost motion is adapted to be 3. In a ribbon loom, a series of shuttles, a rack operatlvely engaging the same, a

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

' Washington, D. G." 

